Yadav alleged that BJP candidate Rao Inderjit Singh has grossly undervalued his immovable assets at Rs 14.1 crore, whereas its actual worth is over Rs 300 crore as per circle rates. According to him, Congress candidate Rao Dharampal has not disclosed his entire property details and in fact dismissed giving details by filing an entry that he was a deponent or 'karta' of HUF (Hindu Undivided Family) and paid income tax for all their assets. "He has declared the worth of his immovable properties at Rs 6.5 crore. If you say this to anyone, he will laugh at you. He is known as a big developer in Gurgaon," he said.

"The nexus between politician and builders is evident as plots of land being developed by builders are shown as owned by politicians. The conversion of land, prevention of acquisition by government and undervaluing of wealth — they all require a political umbrella," Yadav said adding that in Gurgaon the administration was known to be "for the builder, by the builder and of the builder".

Under-valuing one's property is hardly restricted only to Gurgaon. For instance Congress MP J P Agarwal has claimed in his election affidavit that three properties including one in Lutyens' Delhi and another in posh south Delhi are worth just Rs 1.3 crore while Nagpur MP Nitin Gadkari shows assets worth only Rs 4.73 crore.

Another common trick is wealthier spouses providing cover. So wife Tejaswini pips BJP's Ananth Kumar with assets worth Rs 3.86 crore as compared to the husband's Rs 51.12 lakh. Chandigarh MP Pawan Kumar Bansal also has wealth of Rs 1.06 crore, a shade less than his wife Madhu Bansal who has assets worth Rs 1.60 crore.

Jagdeep Chhokar of Association for Democratic Reforms said, "Under-valuation of assets by politicians is rampant and all possible pretexts are used for not declaring the true worth of their assets." Chhokar said that the NGO had urged the Election Commission to scrutinize and get affidavits of the successful candidates verified by government agencies within 6 months of elections. In this political scenario, Congress' Nandan Nilekani, who declared wealth worth Rs 7700 crore, is a rare exception.